What makes poison ivy a much dreaded plant is urushiol, an oily resin that, upon contact with the skin, can result in contact dermatitis, often presenting as a red, itchy rash with blisters or bumps.

Add Yahoo as a preferred source to see more of our stories on Google. Find out how to get rid of poison ivy without touching this rash-causing plant. Peter Krumhardt Every gardener should know how to ...